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    Selection of motion vector precision
    1.
    发明授权
    Selection of motion vector precision 有权

    公开(公告)号：US11638016B2

    公开(公告)日：2023-04-25

    申请号：US17366887

    申请日：2021-07-02

    申请人： Microsoft Technology Licensing, LLC

    发明人： Gary J. Sullivan ,  You Zhou ,  Chih-Lung Lin

    IPC分类号： H04N19/174 ,  H04N19/139 ,  H04N19/147 ,  H04N19/17 ,  H04N19/523 ,  H04N19/109 ,  H04N19/136 ,  H04N19/177 ,  H04N19/179 ,  H04N19/105 ,  H04N19/52 ,  H04N19/142 ,  H04N19/513

    摘要： Approaches to selection of motion vector (“MV”) precision during video encoding are presented. These approaches can facilitate compression that is effective in terms of rate-distortion performance and/or computational efficiency. For example, a video encoder determines an MV precision for a unit of video from among multiple MV precisions, which include one or more fractional-sample MV precisions and integer-sample MV precision. The video encoder can identify a set of MV values having a fractional-sample MV precision, then select the MV precision for the unit based at least in part on prevalence of MV values (within the set) having a fractional part of zero. Or, the video encoder can perform rate-distortion analysis, where the rate-distortion analysis is biased towards the integer-sample MV precision. Or, the video encoder can collect information about the video and select the MV precision for the unit based at least in part on the collected information.

    TRANSMISSION DEVICE, TRANSMISSION METHOD, AND PROGRAM
    2.
    发明申请
    TRANSMISSION DEVICE, TRANSMISSION METHOD, AND PROGRAM 有权

    公开(公告)号：US20230121046A1

    公开(公告)日：2023-04-20

    申请号：US17914075

    申请日：2021-03-24

    申请人： SONY INTERACTIVE ENTERTAINMENT INC.

    发明人： Katsushi OTSUKA

    IPC分类号： H04N19/115 ,  G06T17/00 ,  H04N19/132 ,  H04N19/142 ,  H04N19/17

    摘要： Provided are a transmission device, a transmission method, and a program capable of performing rate control suitable for an image quality priority image. A basic parameter value decision section (28a) decides, for a frame image that is not an image quality priority image, values of parameters used for encoding an encoding unit that is a part or whole of the frame image, by applying the difference between a control amount and a target value to a predetermined control rule. An image quality priority parameter value decision section (28b) decides, for the frame image that is the image quality priority image, values by which the data size of the generated image data becomes larger than those decided by applying the difference between the control amount and the target value to the predetermined control rule as the values of the parameters used for the encoding unit of the frame image.

    Video encoding and decoding method, apparatus and system
    6.
    发明授权
    Video encoding and decoding method, apparatus and system 有权

    公开(公告)号：US11533501B2

    公开(公告)日：2022-12-20

    申请号：US17375936

    申请日：2021-07-14

    申请人： Huawei Technologies Co., Ltd.

    发明人： Xiaofeng Yang ,  Yuanyuan Zhang ,  Teng Shi

    IPC分类号： H04N19/30 ,  H04N19/187 ,  H04N19/463 ,  H04N19/162 ,  H04N19/119 ,  H04N19/597 ,  H04N19/17 ,  H04N19/70 ,  H04N19/172 ,  H04N19/167 ,  H04N19/176 ,  H04N19/16

    摘要： The present disclosure discloses a video encoding and decoding method, apparatus and system, where the video encoding method includes: determining an independently decodable view in a to-be-encoded picture according to a configuration file corresponding to the video; dividing the picture into at least two tiles, where an area corresponding to one or more tiles that cover the independently decodable view is an independently decodable area; generating an auxiliary message corresponding to the picture, where the auxiliary message includes a location identifier of the independently decodable area; and encoding all tiles included in the picture to form an encoded video bitstream, where the encoded video bitstream includes the auxiliary message. Decoding this encoded video bitstream can lower a requirement for performance of a decoder and improve decoding efficiency.

    INFORMATION PROCESSING APPARATUS, CONTROL METHOD, STORAGE MEDIUM, AND INFORMATION PROCESSING SYSTEM
    8.
    发明申请
    INFORMATION PROCESSING APPARATUS, CONTROL METHOD, STORAGE MEDIUM, AND INFORMATION PROCESSING SYSTEM 有权

    公开(公告)号：US20220385921A1

    公开(公告)日：2022-12-01

    申请号：US17746116

    申请日：2022-05-17

    申请人： CANON KABUSHIKI KAISHA

    发明人： Tsuyoshi Yokomizo

    IPC分类号： H04N19/167 ,  H04N19/159 ,  H04N19/17

    摘要： An information processing apparatus that communicates with a storage device that stores, at a plurality of resolutions, tile images obtained by dividing a picked-up image into a plurality of predetermined regions and to which encoding processing including intra-frame encoding and inter-frame encoding has been performed comprises: a designation unit for designating a predetermined region of the picked-up image for a preset tour in advance; a request unit for requesting the storage device to transmit the tile image including the predetermined region with higher resolution from among the plurality of resolutions; and a display control unit for cutting out the predetermined region from the tile image and cause a display unit to display the cut-out predetermined region, wherein, when the predetermined region is designated in advance, wherein, when the predetermined region is designated in advance, the request unit requests the storage device to transmit the tile image including the predetermined region.